Analysis
- max time kernel
148s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
13/07/2026, 09:50
General
- Target f32919d15ef9317c35f52bf58ed025711bff7987e02c0687d1d9869506ed72ba.exe
- Size 45KB
- Sample260713-lt69xae18q
- SHA256 f32919d15ef9317c35f52bf58ed025711bff7987e02c0687d1d9869506ed72ba
Malware Config
Extracted
-
asyncrat
-
0.5.8
-
Default
-
javsub.blog:80
-
javsub.blog:22
-
javsub.blog:8080
-
javsub.blog:8880
-
javsub.blog:2052
-
javsub.blog:2082
-
javsub.blog:2086
-
javsub.blog:2095
-
javsub.blog:443
-
javsub.blog:2053
-
javsub.blog:2083
-
javsub.blog:2087
-
javsub.blog:2096
-
javsub.blog:8443
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www.javsub.blog:80
-
www.javsub.blog:22
-
www.javsub.blog:8080
-
www.javsub.blog:8880
-
www.javsub.blog:2052
-
www.javsub.blog:2082
-
8HeHwB7nBzpL
-
delay
0
-
install
true
-
install_file
os4sfp.exe
-
install_folder
%AppData%
Signatures
- Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Async RAT payload 1 IoCs
- Executes dropped EXE 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Delays execution with timeout.exe 1 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 29 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\f32919d15ef9317c35f52bf58ed025711bff7987e02c0687d1d9869506ed72ba.exe"C:\Users\Admin\AppData\Local\Temp\f32919d15ef9317c35f52bf58ed025711bff7987e02c0687d1d9869506ed72ba.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "os4sfp" /tr '"C:\Users\Admin\AppData\Roaming\os4sfp.exe"' & exit2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "os4sfp" /tr '"C:\Users\Admin\AppData\Roaming\os4sfp.exe"'3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp84E6.tmp.bat""2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
-
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C:\Users\Admin\AppData\Roaming\os4sfp.exe"C:\Users\Admin\AppData\Roaming\os4sfp.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
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C:\Users\Admin\AppData\Roaming\os4sfp.exe"C:\Users\Admin\AppData\Roaming\os4sfp.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmp84E6.tmp.bat
os4sfp.exe
memory/3172-12-0x0000000074580000-0x0000000074D3C000-memory.dmp
memory/3172-14-0x0000000074580000-0x0000000074D3C000-memory.dmp
memory/5864-0-0x0000000074792000-0x0000000074793000-memory.dmp
memory/5864-1-0x00000000003C0000-0x00000000003D2000-memory.dmp
memory/5864-2-0x0000000074780000-0x0000000074F3C000-memory.dmp
memory/5864-3-0x0000000004F50000-0x0000000004FEC000-memory.dmp
memory/5864-8-0x0000000074780000-0x0000000074F3C000-memory.dmp